Steve week 5 ex 3 lake

This is the discussion board for the December 2010 CM 101 Class.
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sjordan93436
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Postby sjordan93436 » Wed Jan 19, 2011 12:02 am

I attempted to fix this.  I decided that the unmasked areas did not need "a" so I zeroed it.
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ggroess
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Postby ggroess » Thu Jan 20, 2011 1:56 am

Killing the A channel risks creating out of gamut colors...the Deepest Blue in the sky is very close to out of Gamut...RGB might not be able to reproduce the blue you have in the image...it might but it will be close.

Also when you zero out the A you remove any reds that might be in the image.  Use care when doing this...you might lose some depth or shape that the reds are bringing to the details...

Greg
sjordan93436
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Postby sjordan93436 » Thu Jan 20, 2011 2:19 am

But I hoped that the mask was good enough so that a would not be needed there.  Good point.
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